Siemens Building Technology 331-653 Clevis R-407C Port A must be connected

Port A must be connected to the coil to utilize the characterization disk for optimal flow control

this unit features a dual-speed 1300/1600 RPM configuration and is compatible with both 50Hz and 60Hz electrical frequencies

Industrial-Grade Contacts: Designed to withstand repetitive cycling and high-voltage spikes in demanding HVACR applications

OEM Integrity: Built to manufacturer tolerances

The 64L81 is specifically cataloged for Lennox G14 and G21 series furnaces

Siemens Building Technology 331-653 Clevis R-407C Port A must be connectedFor veteran technicians managing commercial air distribution, the Siemens Building Technology 331 653 Clevis is the industry standard for establishing a reliable, non slip mechanical connection. This forged steel clevis is specifically engineered for use with Siemens No. 3, No. 4, and No. 6 pneumatic damper actuators, providing the high strength pivot point required for consistent damper linkage performance. Whether you are performing a VAV box repair